Yes I would wait until the return is accepted before you file a amended return.
However, if it does not make an impact on your tax owed then you don't need to worry with the amended return.
You don't need to file an amended return if you discover a simple math or clerical error on your return. The IRS can correct those types of mistakes on its own. An amended return isn't necessary if you forgot to attach a certain form or schedule to your return, either. The IRS will contact you by mail if they need additional information to fix these types of errors. However, you should file an amended return if there's an issue that changes your filing status, income, deductions, or credits.
You'll need to file an amended return if you receive information after filing your original return that significantly changes your taxable income. For example, you might receive an amended W-2 form or a 1099 form showing previously unreported income (enough to make a difference on your return).
